- 您现在的位置：买卖IC网 > PDF目录229280 > MAX6876ETX (MAXIM INTEGRATED PRODUCTS INC) EEPROM-Programmable, Quad, Power-Supply Tracker/Sequencer Circuit PDF资料下载
参数资料
| 型号： | MAX6876ETX |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | EEPROM-Programmable, Quad, Power-Supply Tracker/Sequencer Circuit |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC36 |
| 封装： | 6 X 6 MM, 0.80 MM HEIGHT, MO-220WJJD-1, TQFN-36 |
| 文件页数： | 1/39页 |
| 文件大小： | 425K |
| 代理商： | MAX6876ETX |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页
General Description
The MAX6876 EEPROM-configurable, multivoltage
power tracker/supervisor monitors four system voltages
and ensures proper power-up and power-down condi-
tions for systems requiring voltage tracking and/or
sequencing. The MAX6876 provides a highly config-
urable solution as key thresholds and timing parame-
ters are programmed through an I2C* interface and
these values are stored in internal EEPROM. The
MAX6876 also provides supervisory functions and an
overcurrent detection circuit.
The MAX6876 features programmable undervoltage and
overvoltage thresholds for each input supply. When all
voltages are within specifications, the device turns on the
external n-channel MOSFETs to either sequence or track
the voltages to the system. All of the voltages can be
sequenced or tracked or powered up with a combination
of the two options. During tracking, the voltage at the
GATE of each MOSFET is increased to slowly turn on
each supply. The voltages at the source of each MOSFET
are compared to each other to ensure that the voltage dif-
ferential between each monitored supply does not
exceed 250mV (typ). Tracking is dynamically adjusted to
force all outputs to track within a ±125mV window from a
reference ramp; if, for any reason, any supply fails to
track within ±250mV from the reference ramp, a FAULT
output is asserted, the power-up mode is terminated, and
all outputs are powered off. Power-up mode is also termi-
nated if the controlled voltages fail to complete the ramp-
up within a programmable FAULT timeout. The MAX6876
features latch-off and autoretry modes to power on again
after a fault condition has been detected.
Other features of the MAX6876 include a reset circuit, a
manual reset input (MR), and a margin disable input
(MARGIN). The device also features outputs for indicat-
ing a power-good condition (PG_) and an overcurrent
condition (OC), and a bus-removal (REM) output.
The MAX6876 is available in a small 6mm x 6mm, 36-
pin thin QFN package and is fully specified over the
extended -40°C to +85°C temperature range.
Applications
Features
o Tracking/Sequencing for Up to Four Supply
Voltages (With One MAX6876 Device) and
Tracking for Up to 16 Supply Voltages (Using
Four MAX6876 Devices)
o EEPROM-Configurable Tracking/Sequencing
Control
o Bus Voltage Independent Operation (MAX6876 Is
Powered from the Tracked Supply Voltages or
Always-On Supply)
o EEPROM-Selectable Undervoltage/Overvoltage-
Lockout Thresholds for Each Input Supply
o EEPROM-Selectable Power-Up/Down Slew Rate
o Programmable Power-Good Output Thresholds
and Timing
o Global Adjustable Undervoltage Lockout or Logic
ENABLE Input
o Independent Internal Charge Pumps to Enhance
External n-Channel FETs (VGATE_SOURCE = 5V)
o Post Power-Up Selectable Overcurrent Detection
o 0.5V to 5.5V IN_ Threshold Range
o ±1.5% Threshold Accuracy
o I2C/SMBus-Compatible Serial Interface
o Small 6mm x 6mm, 36-Pin Thin QFN Package
MAX6876
EEPROM-Programmable, Quad,
Power-Supply Tracker/Sequencer Circuit
________________________________________________________________ Maxim Integrated Products
1
IN4
GATE4
REFIN
N.C.
PG2
PG1
PG4
PG3
OUT4
ABP
TRKEN
SYNCH
OC
REM
FAULT
VCC
1
2
3
4
5
6
7
8
9
27
26
25
24
23
22
21
20
19
MR
SDA
SCL
A1
N.C.
MARGIN
ENABLE
RESET
GATE1
OUT1
IN2
GATE2
OUT2
IN3
GATE3
OUT3
IN1
6mm x 6mm
THIN QFN
MAX6876
TOP VIEW
HOLD
A0
GND
36 35 34 33 32 31 30 29 28
10 11 12 13 14 15 16 17 18
EP*
*EXPOSED PADDLE
Pin Configuration
Ordering Information
19-3479; Rev 0; 10/04
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION
KIT
AVAILABLE
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX6876ETX
-40°C to +85°C
36 Thin QFN
T3666-3
Multivoltage Systems
Networking Systems
Telecom
Storage Equipment
Servers/Workstations
*Purchase of I2C components from Maxim Integrated Products,
Inc., or one of its sublicensed Associated Companies, conveys
a license under the Philips I2C Patent Rights to use these com-
ponents in an I2C system, provided that the system conforms
to the I2C Standard Specification as defined by Philips.
SMBus is a trademark of Intel Corp.
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6884ETP | EEPROM-Programmable, Hex, Power-Supply Supervisors with an ADC |
| MAX6884ETP-T | EEPROM-Programmable, Hex, Power-Supply Supervisors with an ADC |
| MAX6885ETP | EEPROM-Programmable, Hex, Power-Supply Supervisors with an ADC |
| MAX6887AETE | Hex/Quad, Power-Supply Supervisory Circuits |
| MAX6887AETE-T | Hex/Quad, Power-Supply Supervisory Circuits |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6876ETX+ | 功能描述:监控电路 EEPROM-Prog Quad Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6876ETX+T | 功能描述:监控电路 EEPROM-Prog Quad Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6876ETX-T | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6876EVCMOD2 | 功能描述:监控电路 Programmers, Development Systems RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6876EVKIT | 功能描述:监控电路 Programmers, Development Systems RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。